class Monkey:
    def __init__(self, category: str, gender: str, color: str = None, weight: float = None):
        self.category = category
        self.gender = gender
        self.color = color
        self.weight = weight

    def fire(self, tool: str):
        print(f'{self.category} 通过使用{tool}造火')

    def study(self, *things):
        print(f'{self.category} 在学习{things}')


c = Monkey('金丝猴', '雄')
c.study('eat', 'sleep', 'fight', 'run')
